A Heavy Duty Brake System Cleaning Spray For Cleaning Drum And Disc Brakes; Brake Cables; Rotors And Disc Pad/Drum Lining Surfaces Without Disassembly. Reduces Disc Brake Squeal; Improves Brake Performance; Fast Drying With No Residue. Removes Brake Pad Phenolic Resins; Brake Pad Dust And Other Brake Pad Degradation Products.